Emery-wheel dresser.



C. H. STEPHAN- EMERY' WHEEL DRESSER.

APPLICAHON men mus 21. 1915.

Patented May 30, 1916.

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will fit snugly about the di s'r'rns rare CHARLES H. STEPHAN, 0F SPRINGFIELD, OHIO, ASSIGNOR TO THE D'ESMOND- STEPI-IAN MANUFACTURING C0,, OF URBANA, OHIO, A CORPORATION OF OHIO.

EMERY-WHEEL DRESSER.

Specification of Letters Patent.

Patented May 30, 1916.

Application filed. June 21, 1915. Serial No. 35,214.

Springfield, in the county of Clark and' State of Ohio, have invented certain new and useful Improvements in Emery-Wheel Dressers, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to emery wheel dressers and the like and more particularly to that type of dresser comprising a stick of abrasive material inclosed within a casing of metal which supports and reinforces the stick. In use the end of this stick is applied to the wheel which is to be dressed and the stick and its metal casing wear away together.

The object of the present invention is to provide a reinforcing casing for the abra-' sive stick which can be quickly and easily applied to the stick and which will be of such a character that a single size of sleeve iferent sticks even though they may vary slightly in size; and a further object of the invention is to pro vide a complete dresser of this type, parts of which may be preserved and utilized in connection with other parts to produce a new dresser, thus avoiding the necessity of discarding all the dresser, when the abra- It is also an object of the invention to provide means for connecting the handle to the casing by means of such clamping devices.

In the accompanying drawings, Figure 1 is a perspective view of an emery wheel dresser embodying my invention; Fig. 2 is a transverse, sectional view of the same taken on the line as a: of Fig. 1; Fig. 3 is a similar view showing a slightly modified form of easing; Fig. 4 is a perspective view of an emery wheel dresser having a slightly different form of casing, and Fig. 5 is a transverse, sectional view of the same.

In these drawings I have illustrated one type of emery wheel dresser embodying my invention and have shown three vdiflt'erent forms of casing which may be utilized in connection with this type of dresser. These forms differ but slightly in their construction and each comprises a split casing, to receive the stick of abrasive material and clamping sleeves or ferrules to clamp the split casing tightly about the stick.

In Fig. 1 of the drawings I have illustrated what is in many respects the preferred form of the invention and. have shown the same ascomprising a casing 1 which is splitthroughout its length on op- 1 posite sides of its center and thus divided into two parts which may be separated to enable the stick to be placed between them. As has been explained the casing is cut away as the stick of abrasive material is worn away by contact with the wheels which are being dressed. It is, therefore, desirable that the clamping devices should be removable. In this type of the device I have utilized short sleeves or ferrules 2 which are tapered slightly and are adapted to fit about correspondingly tapered exterior portions of the split casing. The tapered exterior surface of the casing may be secured in any suitable manner but it is preferable that the casing should be of thin material and of uniform thickness throughout its length and I have, therefore, tapered the split casing and have formed the stick of abrasive material, which is shown at'3, with a corresponding taper. There are preferably two or moremetal clamping sleeves or- 'gitudinal portions of the split casing. It

will be apparent that the stick and its casing can be very quickly and very easily assembled by simply placing the stick between the two parts of the casing and slipping the ferrules over the casing. The interior diameter of the casing is preferably slightly less than the diameter of the stick so that the sticks may vary slightly in diameter without affecting the clamping action of the sleeves 2. Because of the sleeves the space between the'edges of the two parts of the sleeve is unobjectionable.

The dresser is provided with a handle which is shown at 4 and which has one end extending into the adjacent end of the casing 1 to serve as a stop for the stick of abrasive material and prevent the same from moving rearward within the casing when pressure is applied to the end thereof. In order that the handle may be quickly attached to the casing and may be readily de tached therefrom when the stick is worn out I have provided the handle and the casing with interlocking parts which cooperate tosecure the handle to the casing and which are held in cooperating relation by the clamping devices 2. As here shown the handle is provided with a circumferential groove 5 adjacent to the end of the casing and one side of the casing has an inwardly extending lug 6 which enters the groove 5 and which is held in this groove by the clamping device 2 when the latter is in position on the casing. Obviously, both sides of the casing could be provided with lugs if this were thought desirable but it has been found to be unnecessary and the cost of producing the casing is less if the lug is applied to one side only of the same. Not only can. this device be very quickly assembled but it will be apparent that, if desired, the clamping sleeves 0r ferrules 2 may be removed and preserved as the casing isworn away and that when the stick on the dresser has been completely worn out the handle can be removed and preserved. Thus, to secure a new dresser it is only necessary to purchase the abrasive stick and its casing'to which may be applied the handle and clamping devices of the old dresser.

It is not essential to the carrying out of the invention that the split casing should comprise separable parts. It is only necessary that these parts should have relative movement to permit of the clamping action and in Fig. 3 I have shown a casing at 7 which is split for its full length on one side only. This permits of the stick 3 being slipped into the casing and of the clamping sleeves 2 forcing the casing into engagement with the stick.

In Figs. 4 and 5 I have shown a casing 8 which is split for a portion of its length only, it being provided, in the present instance, with three longitudinal slots terminating a short distance from the rear end thereof. The stick and sleeve are tapered, as in the other forms of the device and the clamping sleeves 2 are utilized for securing the same to the stick. Because the rear end of the casing is of a fixed diameter the handle, which is shown at 9, is not clamped in the casing but is secured therein by means of a pin 10.

lVhile I have shown and described one embodiment of my invention it will be understood that this has been chosen for the purposes of illustration only and that I do not desire to be limited to the details of construction shown and described, for obvious modifications will occur to a person skilled in the art.

Having thus fully described my invention, what I claim as new and desire to se cure by Letters Patent, is

1.. In an emery wheel dresser, the combination with a stick of abrasive material, of a divided casing adapted to envelop said stick, a separate handle, interlocking parts on the casing and handle to detachably connect them, and a plurality of sleeves, some of them adapted to clamp the casing upon the stick, and one of them to perform that oflice and also to keep said interlocking parts in engagement, the handle and the sleeves being removable for subsequent use when a stick and casing are worn out.

In an emery wheel dresser, the combination with a tapering stick of abrasive material, of a longitudinally divided tapering metallic casing adapted to envelop the stick, a separate handle having one end grooved, and lugs on the casing to fit said groove, and a plurality of tapering sleeves, all of which clamp the casing to the stick and one of which binds the casing to both the stick and the handle.

In testimony whereof, I afiiX my signature in presence of two witnesses.

CHARLES H. STEPHAN.

Witnesses CHARLES E. ZIMMERMAN, M. RAY WEIKART.

Copieaoi this patent may be obtained for five cents each, by addressing the Commissioner of iratents, Washington, D. G. 

